import type { SearchProviderId } from "../../tools/web/types.js";
import type { ProviderStatus } from "../../types.js";
import { SecretSource } from "./secret-store.js";
export declare const searchProviderEnvVars: Record<SearchProviderId, string | undefined>;
export interface ProviderKeySlot {
    readonly id: string;
    readonly value: string;
    readonly createdAt: number;
    readonly disabled?: boolean | undefined;
}
export interface ProviderKeysResult {
    readonly keys: ProviderKeySlot[];
    readonly activeIndex: number;
    readonly source: ProviderStatus['source'];
}
export declare const MAX_PROVIDER_KEYS = 10;
export declare function newKeyId(): string;
export declare function clampActiveIndex(index: number, len: number): number;
export declare function parseProviderKeysPayload(raw: string | undefined): {
    keys: ProviderKeySlot[];
    activeIndex: number;
};
export declare function serializeProviderKeysPayload(keys: readonly ProviderKeySlot[], activeIndex: number): string;
export declare function getSearchProviderKeys(id: SearchProviderId): Promise<ProviderKeysResult>;
export declare function getSearchProviderKey(id: SearchProviderId): Promise<{
    value?: string;
    source: SecretSource;
}>;
export declare function setSearchProviderKeys(id: SearchProviderId, values: readonly string[], activeIndex?: number, disabledValues?: readonly string[]): Promise<'keychain' | 'fallback'>;
export declare function appendSearchProviderKey(id: SearchProviderId, secret: string): Promise<'keychain' | 'fallback'>;
export declare function unsetSearchProviderSecret(id: SearchProviderId): Promise<void>;
export declare function setSearchProviderKeyDisabled(id: SearchProviderId, value: string, disabled: boolean): Promise<boolean>;
export declare function markSearchProviderKeySuccess(id: SearchProviderId, index: number): Promise<void>;